000 003620000a22001450004500
001 22489
090 _a22489
100 _a20190520 frey50
101 _aeng
102 _aGB
200 0 1 _aThe unity of science
_fJohan Hjort
210 _aLondon
_c[1920]
_dBurleigh Street, Covent Garden
215 _avi, 176 p.
_d19 cm
317 _aIPIMAR
700 _aHjort,
_bDr. Johan